NORTH AMERICAN BATRACHIA AND REPTILIA. 
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Postorbital plates — Those behind the eye. 
Preanal pores — The pores in front of the anus. 
Prefrontal plate — In front of postfrontal. 
Premaxillary bones — Those which form anterior border of upper 
jaw, meeting in median line. 
Proccelian — Vertebrae concave in front only. 
Proximal — N earest. 
Pubis — The anterior segment of the lower portion of the pelvic 
bones. 
Quadrate bone — The proximal bone in the series forming the 
lower jaw; the one by which the rest are joined to the 
cranium. 
Reniform — Kidney-shaped. 
Rostral plate — The one that forms the tip of the snout. 
Rugosities — Roughnesses or wrinkles. 
Semipalmate — Toes half webbed. 
Serrated — With saw-tooth projections. 
Sessile — Attached without any stalk or foot. 
Squamosal — Like a scale. 
Sternal plates — Those on the abdomen. 
Sternal ribs — The ribs which are attached to the sternum. 
Subapical — Near the apex. 
Subcaudal — Beneath the tail. 
Subcircular — Nearly round. 
Subcylindrical — Almost cylindrical. 
Subgular — On the throat or under surface of the neck. 
Suborbital plates — Those between eye and labials. 
Superciliary — Over the eye. 
Superciliary plate — On top of head, over eye. 
Supranasal plate — One above the nasal. 
Symphyses — Junctures of bones, especially along median line. 
Tarsal bones — Those in the ankle between the long bones of 
foot and leg. 
Temporal plates — Between occipitals and labials. 
Tympanum — The drum-head of the ear. 
Ultimate — Last or farthest. 
Vertebra — One of the bones of the back. 
